Control of rickettsial infections requires _____.
regular bathing
antibiotics
insect control
quarantine
Answers
Answer:
insect control
Explanation:
The control of rickettsial infections requires the control of insects.
Rickettsial infections are caused by obligately intracellular Gram-negative bacteria that can only live inside a host organism. The host organisms are usually insects such as ticks, fleas, lice, etc. and a bite from any of the insects hosting the bacteria represents the only through which the infections are transmitted.
Hence, controlling the insects that serve as hosts for the bacteria will go a long way in controlling rickettsial infections.
Answer: insect control
Explanation:
Related Questions
Which statement best describes the order of materials in the fossil record?
a. Newer fossils are found in higher layers than older fossils.
b. Older fossils are found in higher layers than newer fossils.
c. Older rock layers form on top of the newer layers.
d. None of the above
Answers
Answer:
b
Explanation:
how the rates of measles vaccine has declined over time?
Answers
Answer:
Even though a safe and cost-effective vaccine is available, in 2018, there were more than 140 000 measles deaths globally, mostly among children under the age of five.
Measles vaccination resulted in a 73% drop in measles deaths between 2000 and 2018 worldwide
In 2018, about 86% of the world's children received one dose of measles vaccine by their first birthday through routine health services – up from 72% in 2000.
During 2000- 2018, measles vaccination prevented an estimated 23.2 million deaths making measles vaccine one of the best buys in public health.
About 85% of the children globally have received this vaccine as of 2013...
Describe what a food chain represents. It can be in a sentence or 2
Answers
Answer:
A food chain represents a series of events and consumption in which food and energy are consumed from one organism in an ecosystem to another. Food chains show how energy is passed from the sun to producers, from producers to consumers, and from consumers to decomposes such as fungi.
Explanation:
What kind of seeds should farmers plants in order to grow giant pumpkins,and why is this important?
Answers
Answer:
pumpkin need too much of sunny place.
What do mitochondria do in healthy cells, and ny had defective mitochondria caused
David to lose his vision?
Answers
Muscle weakness, intolerance to exercise, decreased hearing and vision, ataxia, seizures, learning difficulties, heart problems, diabetes, and poor growth are the hallmark signs of mitochondrial myopathy.
What will happen if have a defective mitochondria?Defects in mitochondria, the body's energy producers that may be found inside practically all cells, are the root cause of mitochondrial disorders. mitochondrial myopathies are mitochondrial diseases that create noticeable muscular issues, while mitochondrial encephalomyopathies are mitochondrial disorders that cause noticeable muscular and neurological abnormalities.Several of the syndromes linked to mitochondrial disease include Barth syndrome, Chronic progressive external ophthalmoplegia, Kearns-Sayre syndrome, Leigh syndrome, Mitochondrial DNA depletion syndromes , Mitochondrial encephalomyopathy, Lactic acidosis, and stroke-like episodes, Mitochondrial neurogastrointestinal encephalomyopathy, Myoclonus epilepsy with ragged red fibers, Neuropathy, ataxia, and retinitis pigmentosa , Pearson syndrome.The mtDNA mutation that causes NARP also causes MILS, and the two disorders can coexist in the same family. NARP can cause developmental delay, seizures, and dementia in addition to the primary symptoms for which it is called.To learn more about mitochondria refer :
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Which of the following describes what food is used for after it is broken down?
Answers
Answer:
All of the above. I think this is the answer.
I have a test tomorrow on cells any tips on how i can get a good score
Answers
Answer:
Studying your notes on cells by reading them out loud. Also if you make yourself flash cards it's really useful.
Answer: Of course! Well first off make sure to study, a goal to a good grade is studying, Maybe look over some old things, or things written in your notebooks. You also want a good nights sleep! I personally stress the night before a test but relaxing listening to music should help. And finally, Study an hour before it and focus. You always have to focus on tests for good grades. Anyways, If you need more tips just ask! Good luck on your test!
Explanation:
Wishing you luck!
How does nuclear energy use differ from geothermal and solar energy use?
a.
Geothermal and solar energy both have a mining step, while nuclear energy does not.
b.
Geothermal and solar energy both require water, while nuclear energy does not.
c.
Geothermal and solar energy are both renewable, while nuclear energy is not.
d.
Geothermal and solar energy both generate a significant amount of waste, while nuclear energy does not.
Please select the best answer from the choices provided
A
B
C
D
Answers
Answer:
C- Geothermal and solar energy are both renewable, while nuclear energy is not.
Explanation:
edge 2021
Answer:
C
Explanation:
what's the effect if each structure of a dicot root was absent
Answers
Answer:do
Explanation:
lol
What conditions in an ecosystem are likely to allow a species to become invasive there? How might scientists use biomes to study this?
Answers
native ecosystem of a species, it
would probably be easier for it to
invade. Scientists might refer to
descriptions of biomes to predict
where a species might become
invasive. For example, if the species
is found in a new location that
is the same biome as its native ecosystem,
it is probably more likely
to become invasive.
Which of the following protein hormones produces a decrease in blood glucose by causing glucose to enter cells for energy production?
a.Insulin
b.Aldosterone
c.Thyroid hormone
d.Cortisol
Answers
a. Insulin is a protein hormone that is produced by the pancreas and plays a key role in regulating blood glucose levels. When blood glucose levels are high, insulin is released into the bloodstream, where it acts on cells to cause glucose to enter the cells and be used for energy production. This helps to lower blood glucose levels.
Aldosterone is a steroid hormone that is produced by the adrenal gland and helps to regulate electrolyte and fluid balance in the body. It does not have a direct effect on blood glucose levels.
Thyroid hormone is a protein hormone that is produced by the thyroid gland and plays a role in regulating metabolism and growth. It does not have a direct effect on blood glucose levels.
Cortisol is a steroid hormone that is produced by the adrenal gland in response to stress and helps to regulate metabolism, immune function, and other bodily processes. It does not have a direct effect on blood glucose levels.
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1. State three ways in which protein are important to plant
(3marks)
Answers
1. Plants store proteins in embryo and vegetative cells to provide carbon, nitrogen, and sulfur resources for subsequent growth and development.
2. The storage and mobilization cycles of amino acids that compose these proteins are critical to the life cycle of plants.
3. Stored protein provides building blocks for rapid growth upon seed and pollen germination.
4. Protein reserves in vegetative cells provide the building blocks for seed and fruit set during reproductive growth and for rapid expansion of vegetative structures after periods of dormancy.
Hope this helps and have a nice day : )
Proteins are important in plants in order to synthesize cellular components (e.g., organelles), provide structural support cytoskeleton) and carry to metabolic reactions (enzymes).
Proteins are fundamental biomolecules composed of amino acids linked by peptide bonds.In cells, proteins can play diverse structural and enzymatic roles.For example, structural proteins are required to synthesize ribosomes, which serve to assemble other proteins that form the cytoskeleton of cells. Moreover, enzymes are proteins capable of catalyzing chemical reactions such as photosynthetic reactions.In conclusion, proteins are important in plants in order to synthesize cellular components (e.g., organelles), provide structural support cytoskeleton) and carry to metabolic reactions (enzymes).
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In a study about ecosystems, scientists planted 100 identical plots of land in a natural setting with 1 to 15 different species of native grasses. Over the next 10 years, the scientists recorded the change in biomass in each plot as a measure of stability.
Which of the following relationships between species number and stability was most likely observed during the study?
Choose 1 answer:
A. Plots with a larger number of species were less stable.
B. The number of species in a plot did not have an effect on the plot’s stability.
C. Plots with a larger number of species were more stable.
Answer: C.
Answers
As 1 to 15 different native species were grown on the same plot then it is expected that: C. Plots with a larger number of species were more stable.
Ecosystem is a community of living organisms where living beings interact with their physical environment. Greater the biodiversity in an ecosystem at the species level greater will be the stability of the ecosystem. In species with higher genetic diversity will pass on traits to the next generation and if pollinate with other plants of other or same species will also impart the genetic diversity. Such species will be capable of withstanding weather disturbances, climate changes, and diseases. Here larger number of species in the plot after 10 years is indicative of the fact that gene pool of the species surviving in the plot has greater genetic diversity facilitating survival of all species and there is no competition among different species for resources.Learn more about ecosystems:
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During exercise, you breathe in and breathe out an extra 3 liters of air. is it true or false ?
Answers
During exercise, it is true that you breathe in and breathe out an extra 3 liters of air.
When you engage in physical activity, your body requires more oxygen to meet the increased demand for energy. To supply this oxygen, you breathe in a larger volume of air. Additionally, exercise also increases your respiratory rate, which means you take more breaths per minute. This combination of deeper breaths and increased breathing rate results in the exhalation of approximately 3 liters of additional air during exercise.
This process helps to deliver oxygen to your muscles and remove carbon dioxide, which is a waste product of metabolism. So, it is indeed true that during exercise, you breathe in and breathe out an extra 3 liters of air.
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Which explanation is most likely for a particular human population with a higher incidence of polydactyly (extra fingers/toes) than the human population as a whole
Answers
Founder effect is most likely for a particular human population with a higher incidence of polydactyly (extra fingers/toes) than the human population as a whole.
In population genetics, the basic effect is the loss of genetic variation that occurs when a new population is founded by a very small number of individuals from a larger population. As a result of the loss of genetic variation, the new population may differ significantly, both genotypically and phenotypically, from the parent population from which it originates. In extreme cases, the founder effect is thought to lead to speciation and the subsequent evolution of new species The founder effect is a form of genetic drift. This is a phenomenon in which a new population is derived from a small isolated group of individuals. The new population is genetically different from the parent populations. The founder effect can arise from cultural isolation. For example, the Amish population in the United States exhibits a founder effect because it grew from very few founders, they do not have any newcomers, and tends to marry within the same community.
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What is the first step in the process during the formation of modded fossils
Answers
Answer:
First, any soft tissue that was present in life decays, leaving behind the hard parts: bones, teeth, shells. This usually happens very quickly as a result of bacterial action.
Explanation:
What are the 4 classifications of lipids?
Answers
Fatty acids, glycerides, nonglyceride lipids, and complex lipids are the four primary categories of lipids.
What is a lipids and its function?Lipids are fatty substances that have many different jobs to do in your body. They are a component of the cell membranes and aid in regulating what enters and exits your cells. They aid in producing hormones, absorbing vitamins, and transporting and storing energy. Having too many lipids can be dangerous.
What are the 3 main lipids?Triacylglycerols, sometimes referred to as triglycerides, phospholipids, and sterols, are the three primary categories of lipids. 1) More than 95% of the lipids in the diet are composed of triglycerides, which are frequently present in fried meals, butter, milk, cheese, as well as some meats.
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.In organisms such as the chick, in which the egg has extensive yolk, the egg
A. shows complete cleavage.
B. shows incomplete cleavage.
C. forms a blastoderm but no blastocoel.
D. shows even distribution of the yolk.
E. fails to synthesize DNA during cleavage.
Answers
In organisms like the chick, where the egg contains extensive yolk, the egg exhibits incomplete cleavage (option B). Incomplete cleavage occurs because the yolk is concentrated in a specific region of the egg called the vegetal pole, while the animal pole contains less yolk.
The presence of the yolk hinders the complete division of the egg during cleavage, resulting in the partial separation of cells.
This process leads to the formation of a structure called the blastoderm, which is a thin layer of cells covering the yolk (option C). However, due to incomplete cleavage, a blastocoel, which is the fluid-filled cavity usually found in a blastula, does not form in these organisms.
The distribution of yolk in the egg is not even (option D), as it is concentrated more towards the vegetal pole, causing the aforementioned incomplete cleavage. Lastly, the egg does not fail to synthesize DNA during cleavage (option E); DNA synthesis is essential for cell division and the development of the embryo.
In conclusion, chick eggs with extensive yolk show incomplete cleavage and form a blastoderm, but no blastocoel, due to the uneven distribution of yolk within the egg.
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PLS HELP
According to the model represented in the diagram, which of the following would cause the cell to not express the lacZ, lacY, and lacA sequences?
A. Binding the RNA polymerase to the gene
B. Removing the Inducer
C. Preventing the repressor from binding to the lac operon
Answers
Answer:
the answer would be a
Explanation:
When the inducer is removed from the lac operon model, then this will result in hindering the expression of lacZ, lacY, and lacA sequence in the cell. Thus, the correct option is B.
What is lac operon?Lac operon is a model which contains genes that are involved in metabolism of the cell. The genes are expressed only when the lactose is present in the medium and glucose is absent. The lac operon is turned on and off in response to the glucose and lactose levels in the medium: catabolite activator protein (CAP) and lac repressor. The lac repressor is responsible for blocking the transcription of the operon.
The lac operon can be switched off i.e., the expression of genes can be stopped by removing the inducer molecule from the medium.
Therefore, the correct option is B.
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the y chromosome does not contain any genes at all. true or false
Answers
False. While it is true that the Y chromosome is smaller than the X chromosome and contains fewer genes, it still carries several important genes that are necessary for male development and fertility.
These genes include SRY (sex-determining region Y) which triggers the development of male sex organs, as well as genes involved in sperm production and fertility. Additionally, the Y chromosome has been found to play a role in other functions in the body, such as regulating blood pressure and immune system responses. While the Y chromosome may not contain as many genes as other chromosomes, it is still an important part of human genetics and biology.
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how will increasing CO2 affect ocean pH? 2 examples with reasoning/evidence
Answers
The average pH of the ocean is now approximately 8.1, which is basic, but as more \(CO_{2}\) is absorbed, the pH drops and the ocean water becoming more acidic.
By combining with water to generate carbonic acid (\(H_{2} CO_{3}\)), that can separate into the hydrogen ion (H+) and the hydrogen carbonate ion, carbon dioxide (\(CO_{2}\)) affects the pH of blood (\(HCO_{3}\)-). Therefore, more H+ ions as well as a lower pH are produced when the blood's carbon dioxide concentration rises. In seawater, most of the carbon dioxide dissolves as bicarbonate and hydrogen ions. The pH is decreased as a result of this rise in hydrogen ions. Moreover, part of the hydrogen reacts with the carbonate to produce additional bicarbonate, lowering the carbonate level in the ocean.
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summary of climate change
Answers
HELP ME PLEASE I NEED HELP
Answers
Answer:
thes answer is a bacterial cell
which of the cellular junctions are physically linked with the cytoskeleton? adherens junctions, desmosomes, and gap junctions tight junctions, adherens junctions, and desmosomes adherens junctions and desmosomes tight junctions, gap junctions, and desmosomes
Answers
The cellular junctions are physically linked with the cytoskeleton are:
1. Adherens junctions
2. Desmosomes
3. Hemidesmosomes
Chromosome segregation and cytokinesis in mitosis are mediated by the cytoskeleton, which also participates in cellular signaling. It interacts strongly with the plasma membrane, affecting the intracellular mobility of organelles and vesicles and acting as a framework for cellular contents.
Desmosomes help in force transduction by tying together the cytoskeletons of nearby cells. Strong adhesion between adjacent cells is produced by adherens junctions, which use specific proteins called cadherins and catenins. They resemble desmosomes but differ in their molecular make-up.
Hemidesmosomes (HD) are specialized junctional complexes that help stratified and other complex epithelia, including the skin, cornea, various portions of the gastrointestinal and respiratory tract, and the amnion, link epithelial cells to the underlying basement membrane.
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En las células eucariotas el ADN se transcribe a ARN y posteriormente éste se traduce para
fabricar una proteína. Como se muestra en el esquema, la cadena de ADN se transcribe a su
Complementario de ARN mensajero (ARNm). Este sale del núcleo yes leído, en grupos de 3
nucleótidos para atraer complementarios de ARN de transferencia (ARNT), a los cuales se unen
aminoácidos (aa) particulares, con la ayuda de los ribosomas.
Teniendo en cuenta el código de traducción (ARNt aa) que aparece en la tabla, la secuencia de
aminoácidos que se produciría a partir de una secuencia de ADN: AATTTAGAC, sería
Answers
please we need a translator into English
What is photosynthesis? where does it take place in a plant and what products are produced as a result?
please help me with this question
Answers
Answer:
Photosynthesis is when a plant makes food for itself and releases oxygen.
Explanation:
Photosynthesis takes place in the chloroplast of a plant cell, the plant absorbs the light from the sun, takes in carbon dioxide (CO2), and absorbs water from either water on the leaves, or ground water soaked up by plant roots. The light, water, and carbon dioxide get turned into glucose (plant sugar) and oxygen. For humans, they take in sugar and oxygen, and using cellular respiration, they turn the oxygen and sugar into carbon dioxide.
PLEASE HELP ASAP!
Water conservation is an important issue for many reasons. One factor is that water conservation preserves and protects our natural resources. Conserving water means more water is available to serve additional water needs, as well as for wildlife and recreation. Water conservation practices can result in lower wastewater discharges which can mean an improvement in overall water quality. Conserving water diminishes our need to find or build new water sources, leaving them in reserve for our possible later use. Preservation does result in
A) lower algae levels
B) reduction in industry standards
C) slowing the building of new housing
D) lessening the need to find new water sources
Answers
Answer:
i believe the answer is D) lessening the need to find new water sources
What's today's most pressing environmental issue?
A. Food shortages
B. Climate change
C. Pesticide contamination
D. Flooding
Answers
Answer:
climate change
Explanation:
Discuss the function of hemoglobin in human body and the consequences of hemoglobin
deficiency
Answers
Hemoglobin: The high iron-containing protein in red blood cells (RBCs) is known as hemoglobin. This gives the blood a red color.
It has two main functions: it carries oxygen from the lungs to tissues of the body, and it carries carbon dioxide from cells back to the lungs for excretion.
Functions of hemoglobin:
Hemoglobin is the main reason for the red color in our blood.Hemoglobin carries oxygen and carbon dioxide. Hemoglobin interacts with other ligands.Hemoglobin plays a crucial role in maintaining the shape of red blood cells.Consequences of hemoglobin deficiency:
Hemoglobin deficiency leads to having fewer red blood cells and causes anemia.It is found in red blood cells and acts as a carrier of oxygen and carbon dioxide.Low levels of hemoglobin in the blood cause parts of the body to function more slowly and weaken due to reduced oxygenation.Hemoglobin deficiency reduces the blood's oxygen-carrying capacity.
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mitosis
takes one cell and replicates it into two genetically identical cells.
takes two cells one from each parent and replicates it into four genetically unique cells.
takes one cell and replicates it into four cells each with half of the original cell's genetic information.
takes one cell and replicates it into two genetically unique cells.
Answers
Mitosis takes one cell and replicates it into two genetically identical cells (option A).
What is mitosis?Mitosis is the division of a cell nucleus in which the genome is copied and separated into two identical halves. It is normally followed by cell division.
Mitosis is one of the two types of cell division that results in the formation of four daughter cells that are genetically identical to one another.
Mitosis is also called duplication division because it does not change the number of chromosomes of the parent cell.
Therefore, option A is the correct option
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Answer:
Mitosis takes one cell and replicates it into two genetically identical cells.